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US Patent: 902,643
Punch
Patentee: George J. Blum (exact or similar names) - Chicago, IL USPTO Classifications: 30/363 Tool Categories: metalworking machines : metal punching machines metalworking machines : metal shearing machines metalworking tools : metal punches Assignees: Armstrong-Blum Mfg. Co. - Chicago, IL Manufacturer: Armstrong-Blum Mfg. Co. - Chicago, IL Witnesses: George L. Chindahl C. Paul Parker	Patent Dates: Applied: Oct. 18, 1907 Granted: Nov. 03, 1908 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Joel Havens "Vintage Machinery" entry for Armstrong-Blum Manufacturing Co.

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